Siri is often the easiest way to start using accessibility features with your Apple Watch. With Siri, you can open apps, turn many settings on or off, or use Siri for what it does best—acting as your intelligent personal assistant.
Siri: Say something like: “Turn on VoiceOver” or “Turn off VoiceOver.”
See on your Apple Watch.
Go to Accessibility > Siri, then turn on Type to Siri.